On 18 Nov 2015, at 14:05, Jonas Maebe jonas.maebe@elis.ugent.be wrote:
Bastiaan Veelo wrote on Wed, 18 Nov 2015:
This is probably not an issue for you yet (on Yosemite) but under OS X 10.11, El Capitan, writing to /usr is no longer allowed. At least you’ll know this can be an issue if you get problems after upgrading to El Capitan.
Writing to /usr, apart from everything under /usr/local, is something that was never supported under OS X (although it was possible with root permissions), and in fact should never be done on any Unix platform (unless you want to hack the system for one reason or another, which could be perfectly legitimate).
All of those files and directories "belong" to the operating system and could be changed/overwritten with any OS upgrade.
Indeed. Still, most TeX-based utilities relied on a symbolic link to the TeX installation to be present in /bin. https://tug.org/mactex/UpdatingForElCapitan.pdf
Bastiaan.